Flexible band turning tool



Oct. 27, 1953 w, w, JOHNSON 2,656,749

FLEXIBLE BAND TURNING TOOL Filed April 10, 1952 INVENTOR I 1 I I I I I II ATTORNEYS.

Patented Oct. 27, 1953 UNITED STATES PATENT OFFICE FLEXIBLE BAND TURNINGT Warren W. Johnson, St. Joseph, Mo. Application April 10, 1952, SerialNo. 281,553

1 Claim. 1

This invention relates to a device designed for use by automobilemechanics, the primary object of the invention being to provide a devicewhich may be readily and easily positioned for gripping contact with theusual fan pulley of a motor vehicle engine for rotating the crank shaftof the engine as is necessary when repairin the motor bearings when theengine is unmounted.

An important object of the invention is to provide a device of thischaracter which is adjustable to adapt it for use in positioning overfan pulleys of various diameters.

Still another object of the invention is to pro vide a tool of thischaracter embodying a flexible jaw removably mounted on an operatinghandle, to the end that the jaw may be readily and easily removed andreplaced by a larger or smaller jaw to adapt the tool for use on a fanpulley of a predetermined diameter.

A still further object of the invention is to provide a removable jawand handle for supporting the jaw, the means for connecting the jaw tothe handle embodying pins over which sleeves carried by the movable jaware positioned, eliminating the necessity of using a tool such as ascrew driver or Wrench to remove and remount a jaw on the handle.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention consists of certain novel details ofconstruction and combinations of parts hereinafter more fully describedand pointed out in the claim, it bein understood that changes may bemade in the construction and arrangement of parts without departing fromthe spirit of the invention as claimed.

Referring to the drawing,

Figure 1 is a perspective view illustrating a tool constructed inaccordance with the invention as position-ed on the fan pulley of anunmounted engine block to effect rotation of the crank. shaft and othermoving parts of the motor during repairing of an unmounted motor.

Fig. 2 is a fragmental elevational view of the device.

Fig. 3 is a sectional view taken on line 3--3 of Fig. 2.

Referring to the drawing in detail, the device comprises the handle 5which constitutes the lever of the device. The reference character 6indicates a plurality of spaced pivot pins 6 which extend laterally fromone side of the handle 5, adjacent to one end thereof, as clearly shownby the drawing.

The device also comprises a jaw I which is in the form of a bandsupplied with tubes 8 or sleeves which fit over the pivot pins inamanner as shown by Fig. 2 of the drawing, to secure the pins of the bandjaw to the handle. Due to the arrangement of the spaced pivot pins, itis obvious that the diameter of the jaw I may be varied to meet variousrequirements of use.

It might be further stated that when the device is to be used foreffecting rotation of the engine crank and movable parts of an engine ofexceptionally large size, the jaw I may be removed by merely slippingthe sleeves from the pivot pins and positioning a jaw of larger diameteron the handle. by slipping the sleeves of the substitute jaw over thepivot pins.

It is obvious that when the band jaw has been positioned around a fanpulley of a motor, and the handle is tilted to the left, the band jawwill be moved into gripping relation with the fan pulley. Upon furthermovement of the handle, it is obvious that rotary movement may beimparted to the fan pulley and the crank shaft of the engine or motor tochange the positions of the moving parts of the engine, which isnecessary during the repairing of the engine.

In order that the device will securely grip the fan pulley, awedge-shaped friction member indicated by the reference character 9 issecured to the inner surface of the band or jaw 1, the construction ofthe friction member 9 being such as to wedge in the grooved fan pulleygripping the same.

In the use of the device as a means for rotating an unmounted engine,the usual generator adjusting nut is loosened, permitting the usual fanbelt to be removed.

The device may now be positioned as shown by Fig. 1 of the drawing andby pulling the handle 5, the band jaw will be moved into grippingrelation with the fan pulley in a manner as described. By operating thehandle, the position of the crank shaft of the engine as well as othermovable parts of theengine may be changed.

In view of the drawing and foregoing description, it is believed that afurther disclosure of the structure and. operation of the device will beunnecessary for a complete understanding of the invention.

Having thus described the invention, what is claimed is:

A tool comprising a combined handle and lever, a plurality of spaced pinextending laterally from said handle and lever adjacent toone endthereof, a flexible jaw comprising a metallic band with sleeves securedto the ends thereof, said sleeves selectively positioned over said pins,removably securing the ends of the band to said combined handle andlever, and one of said sleeves bearing against the article being turned15 by the tool, thereby providing a fulcrum for the tool.

WARREN W. JOHNSON.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 905,116 Swallow Nov. 24, 1908 1,407,702 Miller Feb. 28, 192210 2,004,830 Rector June 11, 1935 2,081,383 Rector May 25, 1937 FOREIGNPATENTS Numb-e1" Country Date Switzerland Mar. 1, 1919

